– What do you think of my shirt? It _____ cotton.-- It looks nice on you.
The Changjiang River is one of ________ in the world.
________ the party, we sang a song together.
It takes ________ half an hour ________ on my bike.
There ________ a football match between Class 1 and Class 3 next week.
—Excuse me, ________ is the library from here? —It’s about 5 minutes’ walk.